Multilayered step index microlens of low spherical aberration

Alok Kumar Das; Amar K. Ganguly; Ardhendu Saha

doi:10.1117/12.318334

5 August 1998 Multilayered step index microlens of low spherical aberration

Alok Kumar Das, Amar K. Ganguly, Ardhendu Saha

Proceedings Volume 3557, Current Developments in Optical Elements and Manufacturing; (1998) https://doi.org/10.1117/12.318334
Event: Photonics China '98, 1998, Beijing, China

Abstract

A step index planar microlens fabrication process is described for obtaining low spherical aberration. This microlens can be used to achieve effective light coupling between different optical elements and microcircuits in integrated optics. Polymethyl methacrylate (PMMA) doped with N, N'-dihexyl-amino-nitrostelbene (DHANS) is used as lens materials. A concave surface of 580 micrometers diameter is made on Germenia-Silica glass substrate of refractive index 1.4537 at (lambda) equals 1.3 micrometers . Films of different refractive indices are deposited one upon another on the concave surface to obtain multi-layered step index microlens. Refractive index variation of different layers is controlled by percentage of DHANS doping in PMMA. Spherical aberration of the lens is minimized by using step index multi-layered structure of the lens. Theoretical model for longitudinal and lateral spherical aberration is developed using ray theory. The lateral and longitudinal spherical aberration is minimized to a lower value of 1.55 micron and 48.87 micron respectively with the numerical aperture of the lens NA equals 0.0209 and focal length f equals 13.78 mm.

Citation Download Citation

Alok Kumar Das, Amar K. Ganguly, and Ardhendu Saha "Multilayered step index microlens of low spherical aberration", Proc. SPIE 3557, Current Developments in Optical Elements and Manufacturing, (5 August 1998); https://doi.org/10.1117/12.318334

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Monochromatic aberrations

Refractive index

Polymethylmethacrylate

Microlens

Multilayers

Polymers

Doping

Show All Keywords

Keywords/Phrases

Search In:

Publication Years